In summary, the non-dimmable UBA221x family is designed to provide an easy integration into CFL lamps across a range of burner power and mains voltages. The boost function enables an up to 5x shorter lamp run-up time. The adjustable current controlled preheat enables the user to maximize the switching cycles up to greater than 50 k times. Due to the proper preheat, RMS current control and incorporated protections, a lifetime can be achieved of 15000 to 20000 hours. Small form factor retrofit CFL lamps look more like familiar incandescent bulbs, due to IC integration and allowance of using smaller coils due to the saturation protection.